/*-
 * ========================LICENSE_START=================================
 * Core
 * %%
 * Copyright (C) 2020 Smooks
 * %%
 * Licensed under the terms of the Apache License Version 2.0, or
 * the GNU Lesser General Public License version 3.0 or later.
 *
 * SPDX-License-Identifier: Apache-2.0 OR LGPL-3.0-or-later
 *
 * ======================================================================
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * ======================================================================
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 * =========================LICENSE_END==================================
 */
package org.smooks.engine.lookup.converter;

import org.smooks.api.converter.TypeConverterDescriptor;
import org.smooks.api.converter.TypeConverterFactory;
import org.smooks.engine.converter.DefaultTypeConverterDescriptor;

import java.util.Map;
import java.util.Set;

public class SourceTargetTypeConverterFactoryLookup<S, T> implements TypeConverterFactoryLookup<S, T> {

    private final TypeConverterDescriptor<Class<S>, Class<T>> typeConverterDescriptor;

    public SourceTargetTypeConverterFactoryLookup(final Class<S> sourceType, final Class<T> targetType) {
        typeConverterDescriptor = new DefaultTypeConverterDescriptor<>(sourceType, targetType);
    }

    @Override
    public TypeConverterFactory<S, T> apply(final Map<Object, Object> registryEntries) {
        final Set<TypeConverterFactory<?, ?>> typeConverterFactories = (Set<TypeConverterFactory<?, ?>>) registryEntries.get(TYPE_CONVERTER_FACTORY_REGISTRY_KEY);
        return lookup(typeConverterFactories);
    }

    public TypeConverterFactory<S, T> lookup(final Set<TypeConverterFactory<?, ?>> typeConverterFactories) {
        return (TypeConverterFactory<S, T>) typeConverterFactories.stream().
                filter(t -> t.getTypeConverterDescriptor().getSourceType().equals(typeConverterDescriptor.getSourceType()) && t.getTypeConverterDescriptor().getTargetType().equals(typeConverterDescriptor.getTargetType())).
                sorted((o1, o2) -> o2.getTypeConverterDescriptor().getPriority().compareTo(o1.getTypeConverterDescriptor().getPriority())).
                findFirst().
                orElse(null);
    }
}
